Our cheapest offers for flights from London to Sydney

Here you can compare cheap flights from London (LON) to Sydney (SYD) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Sydney. Prices and availability may change at any time.

	Outbound	Return	Airlines	Baggage	Price
London Sydney	Outbound 03/01/26 1 Stopover (PVG) MU0214, MU0735 33h 35min	Return -	China Eastern Airlines		£513
London Sydney	Outbound 12/04/26 1 Stopover (PEK) CA0856, CA0173 31h 10min	Return 28/04/26 1 Stopover (PEK) CA0174, CA0855 33h 50min	Air China		£617
Best option London Sydney	Outbound 06/04/26 direct BA0015 22h 45min	Return 23/04/26 direct BA0016 23h 45min	British Airways	?	£877
London Sydney Please note: transfer for connecting flight	Outbound 27/12/25 1 Stopover (SIN) QF0002, QF0002 23h 25min	Return 16/01/26 1 Stopover (SIN) SQ0212, QF0001 32h 10min	Qantas Airways		£18,135
London Sydney	Outbound 19/02/26 2 Stopovers (ATH, SIN) W95745, TR0051, TR0012 42h 30min	Return 22/02/26 2 Stopovers (SIN, ATH) TR0013, TR0050, W95748 39h 50min	Wizz Air UK, Scoot	?	£658
London Sydney	Outbound 22/04/26 2 Stopovers (PEK, SIN) CA0856, CA0975, TR0012 35h 50min	Return 09/05/26 2 Stopovers (SIN, PEK) TR0013, CA0976, CA0855 32h 45min	Air China, Scoot		£683
London Sydney	Outbound 26/04/26 2 Stopovers (WUH, CAN) CZ0608, CZ6224, CZ0301 39h 25min	Return 13/05/26 2 Stopovers (CAN, PKX) CZ0302, CZ3099, CZ0673 29h 20min	China Southern Airlines		£714
London Sydney	Outbound 08/11/25 2 Stopovers (PKX, CAN) CZ0674, CZ3122, CZ0301 35h 50min	Return 15/12/25 1 Stopover (CAN) CZ0302, CZ0303 31h 25min	China Southern Airlines	?	£717
London Sydney	Outbound 20/04/26 1 Stopover (CAN) CZ0304, CZ0301 36h 30min	Return 06/05/26 2 Stopovers (CAN, PKX) CZ0302, CZ3099, CZ0673 29h 20min	China Southern Airlines		£720
London Sydney	Outbound 18/04/26 1 Stopover (CAN) CZ0304, CZ0325 25h 15min	Return 04/05/26 1 Stopover (CAN) CZ0302, CZ0303 30h 15min	China Southern Airlines	?	£738

Tips and tricks to help you find cheap flights from London to Sydney

Useful information about the flight from London to Sydney

Flights from London to Sydney

The flight route from London (LON) to Sydney (SYD) in Australia is extremely popular in the UK. At a distance of 10,600 miles, the flight time will always take at least 22 hours. Aircraft will almost always land at least once en route to refuel, the actual duration of the journey can therefore vary. This is one of the longest haul routes and airlines operating on this route include Quantas, British Airways, Virgin Atlantic, Cathay and Emirates. There are various routes to choose from, with stopovers either in the Middle East, Asia or even to the west, in the United States. A direct flight from London to Sydney is operated by Qantas and British Airways, taking between 22 and 23 hours.

Cheap flight from London to Sydney

Prices of air tickets fluctuate according to the season and a low cost flight can be purchased for as little as £800 return. Longer flights with two stopovers are the cheapest, but could take as long as 40 hours. Last minute deals are usually not that much more expensive but will be harder to find.

Sydney Airport

The departure airports in London are Gatwick and Heathrow. There is only one destination airport in Sydney, Sydney Kingsford Smith Airport, which is the busiest airport in Australia. The airport is located about 10 miles south of central Sydney. Transport links to and from Sydney airport are provided by buses and trains. Those with late arrival times also have the option of staying at one of the Sydney airport hotels. As the international gateway to Australia, Sydney airport also has connections to many further airports in Australia.

Important flight information

Flight information: London - Sydney

Cheapest outbound flight from	£512.43
Outbound and return from	£616.58
Flight duration	min. 20:30 / max. 21:00
Return flight duration	min. 22:00/ max. 22:25
Distance	17020 km
Flights per week	16
Departure airport	Airport London (LCY, LGW, LHR, LTN, STN, SEN) (LON)
Arrival airport	Airport Sydney Kingsford Smith (SYD)
Destination country	Flights to Australia

Alternative routes to Australia

Our cheapest offers for flights from London to Sydney

London (LCY, LGW, LHR, LTN, STN, SEN)

Sydney Kingsford Smith